First, welcome to the forums.
Second, I am not going to bash any bow, you need to shoot them all and get the one that fits you best. Mathews makes great bows, Ross just make them better
I will tell you that I shot the Cardiac today and was very impressed to say the least. It is smooth, quiet and very fast. The bow only had a rest on it and I shot it a few times, very dead in the hand, no shock etc.
I expect it to be as great as the CR line bows and offer the people that purchase one great pleasure in what they have purchased.
Find your nearest dealer and ask him to shoot it. Then shoot the Dren next. I bet you come home with the Ross :sad:
Oh, I shot Mathews for a long time myself and I am a recent convert to the Ross world. The journey was worth it.
I own a CR337 Comp and today I got a CR334. I will get my Cardiac closer to hunting season.